KR102076553B1 - Apparatus and method for controlling a transmission during intertia running - Google Patents

Abstract

The present invention relates to a device and a method for controlling a transmission during coasting. According to one embodiment of the present invention, the device for controlling a transmission during coasting includes: a learning part learning the tendency of a driver based on condition information of a vehicle during general driving and coasting; a calculation part calculating a moment when a transmission enters a neutral state during coasting in response to a learning result of the learning part; a determination part determining the coasting of the vehicle, and then, determining whether the transmission reaches the neutral state entry moment calculated by the calculation part in response to the tendency of the driver learned by the learning part if the vehicle is coasting; and a neutral state entry control part making the transmission enter the neutral state if the transmission reaches the neutral state entry moment in response to the tendency of the driver during coasting. Therefore, the present invention is capable of increasing fuel efficiency by differentiating neutral state entry moments.

Description

Transmission control device and method during inertia driving {APPARATUS AND METHOD FOR CONTROLLING A TRANSMISSION DURING INTERTIA RUNNING}

The present invention relates to a transmission control apparatus and method during coasting.

Inactive driving means driving with only inertia without additional acceleration in consideration of the distance or signal from the front vehicle. Excessive speeding and repeated braking will reduce fuel consumption due to fuel consumption, but using inertia driving will allow stable driving without unnecessary acceleration and reduce fuel economy.

If the neutral condition is satisfied during inertia driving, the transmission enters the neutral state or if the neutral condition is not satisfied, inertia driving is performed. In some cases, it is more advantageous to maintain a neutral state during inertia driving than inertia driving on a certain distance. However, depending on the driver's disposition, making the transmission neutral during coasting can worsen fuel economy. In the case of a driver with aggressive tendency, re-acceleration after inertia driving is frequently performed, and the method of using fuel-cut during coasting for a short time can further improve fuel economy, and a tendency for a tendency driver. It is advantageous for fuel efficiency to make neutral state early during coasting and take inertia driving as long as possible using inertia of vehicle.

The background art described above is technical information possessed by the inventors for the derivation of the present invention or acquired in the derivation process of the present invention, and may not necessarily be known technology disclosed to the general public before the present application.

Korean Unexamined Patent Publication No. 10-2008-0019805

The present invention has been made to solve the above problems and / or limitations, and an object of the present invention according to one aspect is to improve the fuel efficiency by changing the timing of entering the neutral state during the inertia driving according to the driver's inclination.

In accordance with one embodiment of the present invention, the transmission control apparatus during inertia driving, the learning unit for learning the driver's disposition using the state information of the vehicle during normal driving and inertia; A calculator configured to calculate a neutral state entry time of a transmission during the inertia driving corresponding to a learning result of the learner; A judging unit for judging inertia driving of the vehicle and determining whether the neutral state of the transmission has been entered by the calculator in response to the inclination of the driver learned by the learning unit when the vehicle is in the inertia driving; And a neutral state entry controller configured to enter the transmission into a neutral state when the transmission time is reached in a neutral state in response to the driver's propensity during the driving.

The learning unit learns the oscillation propensity from at least one of the APS change rate, the steering change amount, the inter-vehicle distance and the vehicle speed change rate during driving over a certain vehicle speed during the general driving of the driver, and when the driver represses the accelerator for each vehicle speed during the inertia driving of the driver. I can learn.

The calculation unit, in response to the driver of the aggressive tendency by the learning of the learning unit, calculates a later timing of entering the neutral state of the transmission during the inertia driving compared to the driver of the general tendency, and learns to the driver of the tendency tender by the learning of the learning unit. Correspondingly, it is possible to more quickly calculate the timing of entering the neutral state of the transmission during the inertia driving compared to the driver of the general tendency.

In accordance with one embodiment of the present invention, a transmission control method during a coasting drive may include: learning, by a learning unit, a driver's disposition using state information of a vehicle during a general driving and a coasting road; Calculating, by the calculation unit, a neutral state entry time of the transmission during the inertia driving corresponding to the learning result of the learning unit; Determining, by the determining unit, that the driving of the vehicle is in operation, and determining whether the neutral state of the transmission calculated by the calculation unit has been reached in response to the tendency of the driver learned by the learning unit when the vehicle is in operation of the vehicle; ; And entering, by the neutral state entry control unit, the transmission into the neutral state when the transmission time of the transmission reaches the neutral state in response to the driver's disposition during the inertia driving.

The learning may include learning oscillation propensity from at least one of an APS change rate, a steering change amount, a distance between vehicles and a change rate of the vehicle speed during driving of the driver during a normal driving; And learning a time of stepping on an accelerator for each vehicle speed again during the inertia of the driver.

The calculating may include calculating, when the neutral state enters a neutral state of the transmission during the inertia driving, in response to a driver of aggressive propensity by learning of the learning unit, compared to a driver of a general propensity; And corresponding to a driver having a tendency tendency by learning of the learning unit, calculating a timing of entering a neutral state of the transmission during the inertia driving faster than the driver having a tendency tendency.

In addition, other methods, other systems, and computer programs for implementing the methods may be further provided to implement the present invention.

Other aspects, features, and advantages other than those described above will become apparent from the following drawings, claims, and detailed description of the invention.

According to embodiments, the fuel consumption may be improved by varying the timing of entering the neutral state during the inertia driving according to the driver's propensity.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

FIG. 1 is a view for explaining a transmission control apparatus during a coasting operation according to an embodiment of the present invention.
FIG. 2 is a waveform diagram schematically illustrating a timing of entering a neutral state during inertia driving according to a driver's tendency in FIG. 1.
FIG. 3 is a flowchart illustrating a transmission control method during inertia driving according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments set forth below, but may be embodied in many different forms and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. . The embodiments set forth below are provided to make the disclosure of the present invention complete, and to fully inform the scope of the invention to those skilled in the art. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present disclosure does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components will be given the same reference numerals and redundant description thereof will be omitted. Let's do it.

FIG. 1 is a view for explaining a transmission control apparatus during a coasting operation according to an embodiment of the present invention. Referring to FIG. 1, the transmission control apparatus 1 during the coasting driving may include a storage medium 100, a sensing unit 200, a transmission 300, and a controller 400.

The storage medium 100 may store a program for performing transmission control during coasting, and may store data processed by the controller 400, for example, a learning result or a timing of entering the neutral state of the transmission during coasting. To perform the function. In the present embodiment, the storage medium 100 may include magnetic storage media or flash storage media, but the scope of the present invention is not limited thereto. The storage medium 100 may include internal memory and / or external memory, and may include volatile memory such as DRAM, SRAM, or SDRAM, one time programmable ROM (OTPROM), PROM, EPROM, EEPROM, mask ROM, flash ROM, and the like. SSD, non-volatile memory, such as NAND flash memory, or NOR flash memory. It may include a flash drive such as a compact flash (CF) card, an SD card, a Micro-SD card, a Mini-SD card, an Xd card, or a memory stick, or a storage device such as an HDD.

The sensing unit 200 may detect a variable of a transmission control method during normal driving or inertia driving. In the present exemplary embodiment, the sensing unit 200 may include an accelerator opening amount detecting unit 210, a brake operation detecting unit 220, a vehicle speed detecting unit 230, a vehicle speed change rate detecting unit 240, and a gear stage detecting unit 250. It may include one or more. The excel opening amount detection unit 210 may detect the excel opening amount when the excel pedal is pressed down. The brake operation detecting unit 220 may detect whether the brake is activated when the brake pedal is pressed. The vehicle speed detector 230 may detect the vehicle speed based on the wheel rotation amount and the movement distance of the vehicle. The vehicle speed change rate detector 240 may detect whether the vehicle speed of the vehicle is less than or equal to the reference vehicle speed. The gear stage detecting unit 250 may detect a gear stage state of the vehicle while driving.

The controller 400 performs the driver's propensity learning by using the variable (the vehicle's sensing information) detected by the sensor 200 and the data stored in the storage medium 100, and transmits the transmission during the inertia driving according to the driver's propensity. When the neutral state of the entry time is calculated, and when the driver performs the inertia driving, the transmission 300 may enter the neutral state in accordance with the neutral state entry time calculated according to the propensity of the driver. In the present exemplary embodiment, the controller 400 includes a learner 410, a calculator 420, a determiner 430, and a neutral state entry controller 440.

The learning unit 410 may learn the driver's propensity using the sensing information of the vehicle during normal driving and inactive driving, and store the result in the storage medium 100. The learning unit 410 may learn the oscillation propensity from one or more of the accelerator position sensor (APS) change rate, the steering change amount, the distance between the vehicle during a certain speed or more, and the vehicle speed change rate during the general driving of the driver. You can learn when to re-press Excel for each vehicle speed while driving.

The learning unit 410 may classify the driver's propensity into a total of five using the learning result, such as a driver of aggression, a driver of a general tendency, a driver of a tendency of a tendency, a driver of a tendency between aggressive and general propensity, It can be classified as a driver with a tendency between a general tendency and a tendency to tender. In this embodiment, the APS change rate, the steering change amount, the distance between the vehicle during a certain speed or more, the speed change rate, and the timing of re-pressing the accelerator for each vehicle speed during driving are previously stored as reference values. These reference values may be variously designed and preset based on the specification of the vehicle and the experimental results of the designer. Therefore, the learning unit 410 may learn the current driver's disposition by comparing the parameter of the driver having a general disposition with the parameter of the current driver.

The calculator 420 may calculate a time when the transmission 300 enters the neutral state during the inertia driving in response to the learning result of the learner 410, and store the timing when entering the neutral state in the storage medium 100.

The calculator 420 may calculate a later timing of entering the neutral state of the transmission 300 during inertia driving compared to a driver of a general tendency, in response to the driver of an aggressive tendency by the learning of the learner 410. It is due to the fact that the driver who has an aggressive tendency to re-accelerate during inertia driving frequently improves fuel economy by using fuel-cut during coasting for a short time. In other words, the driver with aggression tends to delay the entry of the neutral state during driving and to use the fuel cut for a long time. Here, the fuel cut may include blocking fuel injection in a state in which the damper clutch is directly connected to the driver when the driver coasts without driving the accelerator pedal. In addition, in the present embodiment, the neutral state entry timing of the transmission 300 during the inertia driving compared to the driver having a general tendency is previously stored as a reference value, and the reference value is variously designed and preset based on the specification of the vehicle and the experimental result of the designer. It may be.

The calculator 420 may calculate the timing of entering the neutral state of the transmission 300 more quickly in response to the driver having a tendency by learning of the learner 410 and the inertia driving compared to the driver having a general tendency. In the case of a driver with a tendency to tend to be neutral during coasting, it is due to the fact that it can be advantageous for fuel economy to make the inertia driving as long as possible using the inertia of the vehicle. That is, a driver with a tendency to tend to enter the neutral state during the inertia driving can be performed to perform a neutral inertia driving rather than a fuel cut.

FIG. 2 is a view illustrating a waveform diagram for schematically explaining a timing of entering a neutral state during inertia driving according to a driver's inclination, and FIG. 2A shows a neutral state of a transmission 300 in a inertia driving of a driver having an aggressive tendency. 2b shows the timing of the transmission 300 entering the neutral state during the inertia driving of the driver having a tendency to be soft, and the neutralization of the transmission 300 during the inertia driving of the driver with an aggressive tendency is shown. It can be seen that the state entry timing is later.

The determination unit 430 determines the inertia driving of the vehicle, and enters the neutral state of the transmission 300 calculated by the calculating unit 420 in response to the inclination of the driver learned by the learning unit 410 when the vehicle is in inactive driving. You can determine if the time has been reached. In the present exemplary embodiment, the determination unit 430 may have an Excel opening amount of 0 in a state where the gear shifting position is the driving D position, and the vehicle speed is greater than or equal to the preset reference vehicle speed and less than or equal to the preset second reference vehicle speed. When the amount of change is equal to or greater than the first reference vehicle speed change or more than the preset second reference vehicle speed change and the brake is determined to be inoperative, it may be determined that the vehicle is in a coasting state.

As a result of the determination by the determination unit 430, when the vehicle is inertia driving and the neutral state entry timing of the transmission 300 is reached in response to the driver's propensity, the neutral state entry control unit 440 moves the transmission 300 to the neutral state. Can enter. As such, the fuel consumption can be improved by changing the timing of entering the neutral state during the inertia driving according to the driver's propensity.

3 is a flowchart illustrating a transmission control method during inertia driving according to an embodiment of the present invention. In the following description, portions that overlap with the description of FIGS. 1 and 2 will be omitted.

Referring to FIG. 3, in step S310, the controller 400 learns a driver's disposition by using detection information of a vehicle during normal driving and inactive driving. The controller 400 may learn the oscillation propensity from one or more of an accelerator position sensor (APS) change rate, a steering change amount, a distance between vehicles during a predetermined vehicle speed, and a vehicle speed change rate during a general driving of the driver, During this time, you can learn the time to retake the Excel by car speed, and you can use the learning results to classify the driver's propensity into a total of five types. The driver may be classified into a driver having an inclination between inclinations, a driver having a general inclination and a tendency between soft inclinations.

In operation S320, the controller 400 may calculate a neutral state entry time of the transmission 300 during the coasting operation in response to the learning result. The control unit 400 may calculate the timing of entering the neutral state of the transmission 300 later in response to the driver of the aggressive tendency by learning, and the driving of the neutral state during the inertia driving compared to the driver of the general tendency, and in response to the driver of the soft tendency, It is possible to calculate the timing of entering the neutral state of the transmission 300 more quickly during the inertia driving compared to the driver of the propensity.

In step S330, the controller 400 determines the inertia driving of the vehicle. As a result of the gear stage detection, the control unit 400 has an accelerator opening amount of 0 when the shift lever position is a driving (D) position, a vehicle speed is greater than or equal to a preset reference vehicle speed, and less than or equal to a preset second reference vehicle speed, and the vehicle speed change amount is preset. When it is determined that the first reference vehicle speed change amount or more is equal to or less than the second preset reference vehicle speed change amount and the brake is not activated, the vehicle may be determined to be inertia.

In operation S340, when the vehicle is inactive, the controller 400 determines whether the neutral state of the transmission 300 has been reached by counting the time at the point of determining the inertia of the vehicle and calculating the speed corresponding to the learned driver's propensity. do.

In step S350, when the time counting result reaches the neutral state entry time of the transmission 300 in response to the driver's tendency, the controller 400 enters the transmission 300 into the neutral state.

Embodiments according to the present invention described above may be implemented in the form of a computer program that can be executed through various components on a computer, such a computer program may be recorded in a computer-readable medium. At this time, the media may be magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and ROMs. Hardware devices specifically configured to store and execute program instructions, such as memory, RAM, flash memory, and the like.

On the other hand, the computer program may be specially designed and configured for the present invention, or may be known and available to those skilled in the computer software field. Examples of computer programs may include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler.

In the specification (particularly in the claims) of the present invention, the use of the term “above” and similar descriptive terms may correspond to both singular and plural. In addition, in the present invention, when the range is described, it includes the invention to which the individual values belonging to the range are applied (when there is no description thereof), and each individual value constituting the range is described in the detailed description of the invention. Same as

If the steps constituting the method according to the invention are not explicitly stated or contrary to the steps, the steps may be performed in a suitable order. The present invention is not necessarily limited to the description order of the above steps. The use of all examples or exemplary terms (eg, etc.) in the present invention is merely for the purpose of describing the present invention in detail, and the scope of the present invention is limited by the above examples or exemplary terms unless defined by the claims. It doesn't happen. Also, one of ordinary skill in the art appreciates that various modifications, combinations and changes can be made in accordance with design conditions and factors within the scope of the appended claims or their equivalents.

Accordingly, the spirit of the present invention should not be limited to the above-described embodiments, and all the scope equivalent to or equivalent to the scope of the claims as well as the claims to be described below are within the scope of the spirit of the present invention. Will belong to.

1: Transmission control device during coasting
100: storage medium
200: detector
300: transmission
400: control unit

Claims (6)

A learning unit learning the driver's disposition using the state information of the vehicle during general driving and during inertia driving;
A calculator configured to calculate a neutral state entry time of the transmission during the inertia driving corresponding to a learning result of the learner;
A determination unit configured to determine a driving force of the vehicle and determine whether the neutral state entry time of the transmission corresponding to the propensity of the driver has elapsed from the time when the vehicle starts driving, when the vehicle starts driving; And
And a neutral state entry control unit configured to enter the transmission into a neutral state when a neutral state entry time of the transmission corresponding to the driver's tendency has elapsed from the time when the vehicle starts driving inertia. The method of claim 1, wherein the learning unit,
Learn the oscillation propensity from one or more of APS change rate, steering change amount, inter-vehicle distance and vehicle speed change rate during regular driving of the driver, and learning when to step on the accelerator for each vehicle speed again during the driving of the driver. Transmission control device while driving. The method of claim 1, wherein the calculation unit,
In response to the driver of the aggressive tendency by learning of the learning part, the timing of entering the neutral state of the transmission during driving of the inertia is later compared to the driver of the general tendency, and in response to the driver of the tendency tendency by the learning of the learning part, The transmission control device during inertia driving, which calculates a faster timing of entering the neutral state of the transmission during the inertia driving compared to the inclined driver. Learning, by the learning unit, the driver's disposition using the state information of the vehicle during normal driving and during inertia driving;
Calculating, by the calculation unit, a neutral state entry time of the transmission during the inertia driving corresponding to the learning result of the learning unit;
Determining, by the determination unit, that the driving of the vehicle is inertia and determining whether the neutral state entry time of the transmission corresponding to the propensity of the driver has elapsed from the time when the vehicle starts the inertia; And
And entering, by the neutral state entry control unit, the transmission into a neutral state when a neutral state entry time of the transmission corresponding to the driver's tendency has elapsed from the time when the vehicle starts the inertia driving. Control method. The method of claim 4, wherein the learning comprises:
Learning oscillation propensity from at least one of APS change rate, steering change amount, inter-vehicle distance and vehicle speed change rate during driving of the driver during normal driving; And
And learning the time of stepping on the accelerator for each vehicle speed again during the inertia of the driver. The method of claim 4, wherein the calculating
In response to a driver of aggressive tendency by learning of the learning unit, calculating a later stage of entering the neutral state of the transmission during the inertia driving compared to a driver of a general tendency; And
And calculating a neutral state entry time of the transmission more quickly than the driver of the general tendency in response to the driver of the tendency tendency by the learning of the learning unit.

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